December in Argentan is the windiest month of the year. In December, the weather in Argentan is typically cold. Average daily high temperature in December is about 7 degrees above zero. On average, Argentan has 19 rainy, 5 sunny, 5 cloudy, and 2 partly cloudy days in December. The rains are usually moderate. December as well as January, February, May, and November is considered the most uncomfortable time to visit Argentan.